Define the following terms for concave mirror
1.Pole
2.Centre of curvature
3.Principal Axis
4.Focus
5.Radius of curvature
For class 10th
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1- Pole : The geometric centre of the spherical surface of the mirror is called the pole of the mirror.
2- Centre of curvature: The centre of curvature of a mirror is the centre of the sphere of which the mirror is a part.
3- Principal axis : It is a straight line joining the pole of the mirror to its centre of curvature.
4- Focus : The focus of a concave mirror is a point on the principle axis at which the light rays incident parallel to the principle axis meet (coverage) after reflection from the mirror.
5- Radius of curvature: The radius of curvature of a mirror is the radius of the sphere of which the mirror is part.
2- Centre of curvature: The centre of curvature of a mirror is the centre of the sphere of which the mirror is a part.
3- Principal axis : It is a straight line joining the pole of the mirror to its centre of curvature.
4- Focus : The focus of a concave mirror is a point on the principle axis at which the light rays incident parallel to the principle axis meet (coverage) after reflection from the mirror.
5- Radius of curvature: The radius of curvature of a mirror is the radius of the sphere of which the mirror is part.
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